Bottle stopper



FIG. 1 is a plan view of a bottle stopper showing my new design;

FIG. 2 is a front elevation of the bottle stopper;

FIG. 3 is a side elevation of the bottle stopper;

FIG. 4 is an underside view of the bottle stopper;

FIG. 5 is a rear elevation of the bottle stopper; and,

FIG. 6 is a perspective view of the bottle stopper, shown at an enlarged scale. 

The ornamental design for a bottle stopper, as shown and described. 